METALLA ROYALTY & STREAMING | September 2024 | 12 KeyAssets CASTLE MOUNTAIN MINE TACA TACA San Bernardino, California Salta, Argentina Metal Exposure: Gold Metal Exposure: Copper, Gold, Molybdenum 5.0% NSR –Development (Phase 2) 0.42% NSR –Development –32 years Estimated average annual GEO production ~ 5,000 Estimated average annual GEO production ~ 4,900 Covers South Dome pit that currently hosts a 1.1Moz 2P One of the largest undeveloped copper deposits in the Reserve which is the higher-grade section of the mining Americas, with potential to reach annual recovered copper complex production of 227Kt per year for the first six years Currently operating in phase 1, Castle is anticipated to enter Production decision expected in 2024, initial Environmental an expansion in phase 2 expansion with potential to make and Social Impact Assessment for the project was submitted it one of the top ten gold mine in the USA which includes in 2019 with final approval expected in 2024(4) South Domes.(3)